Shape effect on the magnetic anisotropy of an array of epitaxial (10·0) Co dots

Author

Kohda, T. ; Otani, Y. ; Novosad, V. ; Fukamichi, K. ; Yuasa, S. ; Nyvlt, M. ; Katayama, T.

Author_Institution

Dept. of Mater. Sci., Tohoku Univ., Sendai, Japan

Volume

35

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

3472

Lastpage

3474

Abstract

The competition between the magnetocrystalline and shape anisotropies was studied by using a submicron-size epitaxial (10·0) Co rectangular dots array. The measured torque curves exhibit the magnetic anisotropy with a four-fold symmetry, indicating a clear magnetic easy-axis reorientation. The results were successfully interpreted by taking into account the first order magnetocrystalline, shape and non-negligible second order magnetocrystalline anisotropies

Keywords

cobalt; ferromagnetic materials; magnetic anisotropy; magnetic epitaxial layers; magnetic particles; quantum dots; Co; epitaxial Co dots; four-fold symmetry; magnetic anisotropy; magnetic easy-axis reorientation; magnetocrystalline anisotropies; shape anisotropies; shape effect; torque curves; Anisotropic magnetoresistance; Atomic force microscopy; Magnetic anisotropy; Magnetic force microscopy; Magnetic materials; Magnetostatics; Perpendicular magnetic anisotropy; Shape; Torque measurement; US Department of Transportation;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.800561

Filename

800561